1. School of Public Health and Jiangxi Province Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, Jiangxi, China
2. Affiliated eye hospital, Nanchang University, Nanchang, Jiangxi, China
3. School of Foreign Languages, South China University of Technology, Guangzhou, Guangdong, China
4. Department of Public Health Sciences, University of Hawaii at Mānoa, Honolulu, Hawaii, USA